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community.general/test/units/modules/system/test_iptables.py
Sébastien DA ROCHA bc4ba6b638 Iptables unit tests (#30762)
* Add some tests for iptables

* Fix remove bug (calls 2 times check to remove a chain)

* Add me as maintainer

* Fix PEP8

* Doc: Give more information on issue #18988

* Fix #18988 and test it

* Fix doc (thanks Pillou)

* enable PEP8 check for iptables
2017-11-01 12:08:57 +01:00

611 lines
18 KiB
Python

import json
from ansible.compat.tests import unittest
from ansible.compat.tests.mock import patch
from ansible.module_utils import basic
from ansible.modules.system import iptables
from ansible.module_utils._text import to_bytes
def set_module_args(args):
args = json.dumps({'ANSIBLE_MODULE_ARGS': args})
basic._ANSIBLE_ARGS = to_bytes(args)
class AnsibleExitJson(Exception):
pass
class AnsibleFailJson(Exception):
pass
def exit_json(*args, **kwargs):
if 'changed' not in kwargs:
kwargs['changed'] = False
raise AnsibleExitJson(kwargs)
def fail_json(*args, **kwargs):
kwargs['failed'] = True
raise AnsibleFailJson(kwargs)
def get_bin_path(*args, **kwargs):
return "/sbin/iptables"
class TestIptables(unittest.TestCase):
def setUp(self):
self.mock_basic = patch.multiple(basic.AnsibleModule,
exit_json=exit_json,
fail_json=fail_json,
get_bin_path=get_bin_path)
self.mock_basic.start()
self.addCleanup(self.mock_basic.stop)
def tearDown(self):
pass
def test_without_required_parameters(self):
"""Failure must occurs when all parameters are missing"""
with self.assertRaises(AnsibleFailJson):
set_module_args({})
iptables.main()
def test_flush_table_without_chain(self):
"""Test flush without chain, flush the table"""
set_module_args({
'flush': True,
})
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.return_value = 0, '', '' # successful execution, no output
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 1)
self.assertEqual(run_command.call_args[0][0][0], '/sbin/iptables')
self.assertEqual(run_command.call_args[0][0][1], '-t')
self.assertEqual(run_command.call_args[0][0][2], 'filter')
self.assertEqual(run_command.call_args[0][0][3], '-F')
def test_flush_table_check_true(self):
"""Test flush without parameters and check == true"""
set_module_args({
'flush': True,
'_ansible_check_mode': True,
})
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.return_value = 0, '', '' # successful execution, no output
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 0)
# TODO ADD test flush table nat
# TODO ADD test flush with chain
# TODO ADD test flush with chain and table nat
def test_policy_table(self):
"""Test change policy of a chain"""
set_module_args({
'policy': 'ACCEPT',
'chain': 'INPUT',
})
commands_results = [
(0, 'Chain INPUT (policy DROP)\n', ''),
(0, '', '')
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 2)
# import pdb
# pdb.set_trace()
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-L',
'INPUT',
])
self.assertEqual(run_command.call_args_list[1][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-P',
'INPUT',
'ACCEPT',
])
def test_policy_table_no_change(self):
"""Test don't change policy of a chain if the policy is right"""
set_module_args({
'policy': 'ACCEPT',
'chain': 'INPUT',
})
commands_results = [
(0, 'Chain INPUT (policy ACCEPT)\n', ''),
(0, '', '')
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertFalse(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 1)
# import pdb
# pdb.set_trace()
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-L',
'INPUT',
])
def test_policy_table_changed_false(self):
"""Test flush without parameters and change == false"""
set_module_args({
'policy': 'ACCEPT',
'chain': 'INPUT',
'_ansible_check_mode': True,
})
commands_results = [
(0, 'Chain INPUT (policy DROP)\n', ''),
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 1)
# import pdb
# pdb.set_trace()
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-L',
'INPUT',
])
# TODO ADD test policy without chain fail
# TODO ADD test policy with chain don't exists
# TODO ADD test policy with wrong choice fail
def test_insert_rule_change_false(self):
"""Test flush without parameters"""
set_module_args({
'chain': 'OUTPUT',
'source': '1.2.3.4/32',
'destination': '7.8.9.10/42',
'jump': 'ACCEPT',
'action': 'insert',
'_ansible_check_mode': True,
})
commands_results = [
(1, '', ''),
(0, '', '')
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 1)
# import pdb
# pdb.set_trace()
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-C',
'OUTPUT',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'ACCEPT'
])
def test_insert_rule(self):
"""Test flush without parameters"""
set_module_args({
'chain': 'OUTPUT',
'source': '1.2.3.4/32',
'destination': '7.8.9.10/42',
'jump': 'ACCEPT',
'action': 'insert'
})
commands_results = [
(1, '', ''),
(0, '', '')
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 2)
# import pdb
# pdb.set_trace()
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-C',
'OUTPUT',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'ACCEPT'
])
self.assertEqual(run_command.call_args_list[1][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-I',
'OUTPUT',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'ACCEPT'
])
def test_append_rule_check_mode(self):
"""Test append a redirection rule in check mode"""
set_module_args({
'chain': 'PREROUTING',
'source': '1.2.3.4/32',
'destination': '7.8.9.10/42',
'jump': 'REDIRECT',
'table': 'nat',
'to_destination': '5.5.5.5/32',
'protocol': 'udp',
'destination_port': '22',
'to_ports': '8600',
'_ansible_check_mode': True,
})
commands_results = [
(1, '', ''),
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 1)
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'nat',
'-C',
'PREROUTING',
'-p',
'udp',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'REDIRECT',
'--to-destination',
'5.5.5.5/32',
'--destination-port',
'22',
'--to-ports',
'8600'
])
def test_append_rule(self):
"""Test append a redirection rule"""
set_module_args({
'chain': 'PREROUTING',
'source': '1.2.3.4/32',
'destination': '7.8.9.10/42',
'jump': 'REDIRECT',
'table': 'nat',
'to_destination': '5.5.5.5/32',
'protocol': 'udp',
'destination_port': '22',
'to_ports': '8600'
})
commands_results = [
(1, '', ''),
(0, '', '')
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 2)
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'nat',
'-C',
'PREROUTING',
'-p',
'udp',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'REDIRECT',
'--to-destination',
'5.5.5.5/32',
'--destination-port',
'22',
'--to-ports',
'8600'
])
self.assertEqual(run_command.call_args_list[1][0][0], [
'/sbin/iptables',
'-t',
'nat',
'-A',
'PREROUTING',
'-p',
'udp',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'REDIRECT',
'--to-destination',
'5.5.5.5/32',
'--destination-port',
'22',
'--to-ports',
'8600'
])
def test_remove_rule(self):
"""Test flush without parameters"""
set_module_args({
'chain': 'PREROUTING',
'source': '1.2.3.4/32',
'destination': '7.8.9.10/42',
'jump': 'SNAT',
'table': 'nat',
'to_source': '5.5.5.5/32',
'protocol': 'udp',
'source_port': '22',
'to_ports': '8600',
'state': 'absent',
'in_interface': 'eth0',
'out_interface': 'eth1',
'comment': 'this is a comment'
})
commands_results = [
(0, '', ''),
(0, '', ''),
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 2)
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'nat',
'-C',
'PREROUTING',
'-p',
'udp',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'SNAT',
'--to-source',
'5.5.5.5/32',
'-i',
'eth0',
'-o',
'eth1',
'--source-port',
'22',
'--to-ports',
'8600',
'-m',
'comment',
'--comment',
'this is a comment'
])
self.assertEqual(run_command.call_args_list[1][0][0], [
'/sbin/iptables',
'-t',
'nat',
'-D',
'PREROUTING',
'-p',
'udp',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'SNAT',
'--to-source',
'5.5.5.5/32',
'-i',
'eth0',
'-o',
'eth1',
'--source-port',
'22',
'--to-ports',
'8600',
'-m',
'comment',
'--comment',
'this is a comment'
])
def test_remove_rule_check_mode(self):
"""Test flush without parameters check mode"""
set_module_args({
'chain': 'PREROUTING',
'source': '1.2.3.4/32',
'destination': '7.8.9.10/42',
'jump': 'SNAT',
'table': 'nat',
'to_source': '5.5.5.5/32',
'protocol': 'udp',
'source_port': '22',
'to_ports': '8600',
'state': 'absent',
'in_interface': 'eth0',
'out_interface': 'eth1',
'comment': 'this is a comment',
'_ansible_check_mode': True,
})
commands_results = [
(0, '', ''),
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 1)
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'nat',
'-C',
'PREROUTING',
'-p',
'udp',
'-s',
'1.2.3.4/32',
'-d',
'7.8.9.10/42',
'-j',
'SNAT',
'--to-source',
'5.5.5.5/32',
'-i',
'eth0',
'-o',
'eth1',
'--source-port',
'22',
'--to-ports',
'8600',
'-m',
'comment',
'--comment',
'this is a comment'
])
def test_insert_with_reject(self):
""" Using reject_with with a previously defined jump: REJECT results in two Jump statements #18988 """
set_module_args({
'chain': 'INPUT',
'protocol': 'tcp',
'reject_with': 'tcp-reset',
'ip_version': 'ipv4',
})
commands_results = [
(0, '', ''),
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 1)
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-C',
'INPUT',
'-p',
'tcp',
'-j',
'REJECT',
'--reject-with',
'tcp-reset',
])
def test_insert_jump_reject_with_reject(self):
""" Using reject_with with a previously defined jump: REJECT results in two Jump statements #18988 """
set_module_args({
'chain': 'INPUT',
'protocol': 'tcp',
'jump': 'REJECT',
'reject_with': 'tcp-reset',
'ip_version': 'ipv4',
})
commands_results = [
(0, '', ''),
]
with patch.object(basic.AnsibleModule, 'run_command') as run_command:
run_command.side_effect = commands_results
with self.assertRaises(AnsibleExitJson) as result:
iptables.main()
self.assertTrue(result.exception.args[0]['changed'])
self.assertEqual(run_command.call_count, 1)
self.assertEqual(run_command.call_args_list[0][0][0], [
'/sbin/iptables',
'-t',
'filter',
'-C',
'INPUT',
'-p',
'tcp',
'-j',
'REJECT',
'--reject-with',
'tcp-reset',
])